2 * Zoran 364xx based USB webcam module version 0.72
4 * Allows you to use your USB webcam with V4L2 applications
5 * This is still in heavy developpement !
7 * Copyright (C) 2004 Antoine Jacquet <royale@zerezo.com>
8 * http://royale.zerezo.com/zr364xx/
10 * Heavily inspired by usb-skeleton.c, vicam.c, cpia.c and spca50x.c drivers
11 * V4L2 version inspired by meye.c driver
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 #include <linux/module.h>
30 #include <linux/init.h>
31 #include <linux/usb.h>
32 #include <linux/vmalloc.h>
33 #include <linux/slab.h>
34 #include <linux/proc_fs.h>
35 #include <linux/highmem.h>
36 #include <media/v4l2-common.h>
37 #include <media/v4l2-ioctl.h>
40 /* Version Information */
41 #define DRIVER_VERSION "v0.72"
42 #define DRIVER_AUTHOR "Antoine Jacquet, http://royale.zerezo.com/"
43 #define DRIVER_DESC "Zoran 364xx"
48 #define MAX_FRAME_SIZE 100000
49 #define BUFFER_SIZE 0x1000
50 #define CTRL_TIMEOUT 500
54 #define DBG(x...) if (debug) printk(KERN_INFO KBUILD_MODNAME x)
57 /* Init methods, need to find nicer names for these
58 * the exact names of the chipsets would be the best if someone finds it */
64 /* Module parameters */
69 /* Module parameters interface */
70 module_param(debug, int, 0644);
71 MODULE_PARM_DESC(debug, "Debug level");
72 module_param(mode, int, 0644);
73 MODULE_PARM_DESC(mode, "0 = 320x240, 1 = 160x120, 2 = 640x480");
76 /* Devices supported by this driver
77 * .driver_info contains the init method used by the camera */
78 static struct usb_device_id device_table[] = {
79 {USB_DEVICE(0x08ca, 0x0109), .driver_info = METHOD0 },
80 {USB_DEVICE(0x041e, 0x4024), .driver_info = METHOD0 },
81 {USB_DEVICE(0x0d64, 0x0108), .driver_info = METHOD0 },
82 {USB_DEVICE(0x0546, 0x3187), .driver_info = METHOD0 },
83 {USB_DEVICE(0x0d64, 0x3108), .driver_info = METHOD0 },
84 {USB_DEVICE(0x0595, 0x4343), .driver_info = METHOD0 },
85 {USB_DEVICE(0x0bb0, 0x500d), .driver_info = METHOD0 },
86 {USB_DEVICE(0x0feb, 0x2004), .driver_info = METHOD0 },
87 {USB_DEVICE(0x055f, 0xb500), .driver_info = METHOD0 },
88 {USB_DEVICE(0x08ca, 0x2062), .driver_info = METHOD2 },
89 {USB_DEVICE(0x052b, 0x1a18), .driver_info = METHOD1 },
90 {USB_DEVICE(0x04c8, 0x0729), .driver_info = METHOD0 },
91 {USB_DEVICE(0x04f2, 0xa208), .driver_info = METHOD0 },
92 {USB_DEVICE(0x0784, 0x0040), .driver_info = METHOD1 },
93 {USB_DEVICE(0x06d6, 0x0034), .driver_info = METHOD0 },
94 {USB_DEVICE(0x0a17, 0x0062), .driver_info = METHOD2 },
95 {USB_DEVICE(0x06d6, 0x003b), .driver_info = METHOD0 },
96 {USB_DEVICE(0x0a17, 0x004e), .driver_info = METHOD2 },
97 {USB_DEVICE(0x041e, 0x405d), .driver_info = METHOD2 },
98 {USB_DEVICE(0x08ca, 0x2102), .driver_info = METHOD2 },
99 {} /* Terminating entry */
102 MODULE_DEVICE_TABLE(usb, device_table);
106 struct zr364xx_camera {
107 struct usb_device *udev; /* save off the usb device pointer */
108 struct usb_interface *interface;/* the interface for this device */
109 struct video_device *vdev; /* v4l video device */
112 unsigned char *buffer;
123 /* function used to send initialisation commands to the camera */
124 static int send_control_msg(struct usb_device *udev, u8 request, u16 value,
125 u16 index, unsigned char *cp, u16 size)
129 unsigned char *transfer_buffer = kmalloc(size, GFP_KERNEL);
130 if (!transfer_buffer) {
131 dev_err(&udev->dev, "kmalloc(%d) failed\n", size);
135 memcpy(transfer_buffer, cp, size);
137 status = usb_control_msg(udev,
138 usb_sndctrlpipe(udev, 0),
140 USB_DIR_OUT | USB_TYPE_VENDOR |
141 USB_RECIP_DEVICE, value, index,
142 transfer_buffer, size, CTRL_TIMEOUT);
144 kfree(transfer_buffer);
148 "Failed sending control message, error %d.\n", status);
154 /* Control messages sent to the camera to initialize it
155 * and launch the capture */
159 unsigned char *bytes;
163 static unsigned char m0d1[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
164 static unsigned char m0d2[] = { 0, 0, 0, 0, 0, 0 };
165 static unsigned char m0d3[] = { 0, 0 };
166 static message m0[] = {
169 {0x3370, sizeof(m0d1), m0d1},
172 {0x2610, sizeof(m0d2), m0d2},
177 {0x9a01, sizeof(m0d3), m0d3},
182 static unsigned char m1d1[] = { 0xff, 0xff };
183 static unsigned char m1d2[] = { 0x00, 0x00 };
184 static message m1[] = {
192 {0x2502, sizeof(m1d1), m1d1},
197 {0x9a01, sizeof(m1d2), m1d2},
202 static unsigned char m2d1[] = { 0xff, 0xff };
203 static message m2[] = {
210 {0x2502, sizeof(m2d1), m2d1},
216 static message *init[3] = { m0, m1, m2 };
219 /* JPEG static data in header (Huffman table, etc) */
220 static unsigned char header1[] = {
223 0xFF, 0xE0, 0x00, 0x10, 'J', 'F', 'I', 'F',
224 0x00, 0x01, 0x01, 0x00, 0x33, 0x8A, 0x00, 0x00, 0x33, 0x88,
226 0xFF, 0xDB, 0x00, 0x84
228 static unsigned char header2[] = {
229 0xFF, 0xC4, 0x00, 0x1F, 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01,
230 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
231 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B,
232 0xFF, 0xC4, 0x00, 0xB5, 0x10, 0x00, 0x02, 0x01, 0x03, 0x03, 0x02,
233 0x04, 0x03, 0x05, 0x05, 0x04, 0x04, 0x00, 0x00, 0x01, 0x7D, 0x01,
234 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06,
235 0x13, 0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xA1,
236 0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15, 0x52, 0xD1, 0xF0, 0x24, 0x33,
237 0x62, 0x72, 0x82, 0x09, 0x0A, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x25,
238 0x26, 0x27, 0x28, 0x29, 0x2A, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
239 0x3A, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54,
240 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67,
241 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A,
242 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94,
243 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6,
244 0xA7, 0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8,
245 0xB9, 0xBA, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA,
246 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE1, 0xE2,
247 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xF1, 0xF2, 0xF3,
248 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFF, 0xC4, 0x00, 0x1F,
249 0x01, 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
250 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03, 0x04,
251 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0xFF, 0xC4, 0x00, 0xB5,
252 0x11, 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05,
253 0x04, 0x04, 0x00, 0x01, 0x02, 0x77, 0x00, 0x01, 0x02, 0x03, 0x11,
254 0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
255 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xA1, 0xB1, 0xC1,
256 0x09, 0x23, 0x33, 0x52, 0xF0, 0x15, 0x62, 0x72, 0xD1, 0x0A, 0x16,
257 0x24, 0x34, 0xE1, 0x25, 0xF1, 0x17, 0x18, 0x19, 0x1A, 0x26, 0x27,
258 0x28, 0x29, 0x2A, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44,
259 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56, 0x57,
260 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A,
261 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x82, 0x83, 0x84,
262 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96,
263 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8,
264 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA,
265 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2, 0xD3,
266 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE2, 0xE3, 0xE4, 0xE5,
267 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
268 0xF8, 0xF9, 0xFA, 0xFF, 0xC0, 0x00, 0x11, 0x08, 0x00, 0xF0, 0x01,
269 0x40, 0x03, 0x01, 0x21, 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01,
270 0xFF, 0xDA, 0x00, 0x0C, 0x03, 0x01, 0x00, 0x02, 0x11, 0x03, 0x11,
273 static unsigned char header3;
277 /********************/
278 /* V4L2 integration */
279 /********************/
281 /* this function reads a full JPEG picture synchronously
282 * TODO: do it asynchronously... */
283 static int read_frame(struct zr364xx_camera *cam, int framenum)
285 int i, n, temp, head, size, actual_length;
286 unsigned char *ptr = NULL, *jpeg;
289 /* hardware brightness */
290 n = send_control_msg(cam->udev, 1, 0x2001, 0, NULL, 0);
291 temp = (0x60 << 8) + 127 - cam->brightness;
292 n = send_control_msg(cam->udev, 1, temp, 0, NULL, 0);
294 /* during the first loop we are going to insert JPEG header */
296 /* this is the place in memory where we are going to build
298 jpeg = cam->framebuf + framenum * MAX_FRAME_SIZE;
301 n = usb_bulk_msg(cam->udev,
302 usb_rcvbulkpipe(cam->udev, 0x81),
303 cam->buffer, BUFFER_SIZE, &actual_length,
305 DBG("buffer : %d %d", cam->buffer[0], cam->buffer[1]);
306 DBG("bulk : n=%d size=%d", n, actual_length);
308 dev_err(&cam->udev->dev, "error reading bulk msg\n");
311 if (actual_length < 0 || actual_length > BUFFER_SIZE) {
312 dev_err(&cam->udev->dev, "wrong number of bytes\n");
316 /* swap bytes if camera needs it */
317 if (cam->method == METHOD0) {
318 u16 *buf = (u16*)cam->buffer;
319 for (i = 0; i < BUFFER_SIZE/2; i++)
323 /* write the JPEG header */
327 memcpy(ptr, header1, sizeof(header1));
328 ptr += sizeof(header1);
330 memcpy(ptr, &header3, 1);
332 memcpy(ptr, cam->buffer, 64);
335 memcpy(ptr, &header3, 1);
337 memcpy(ptr, cam->buffer + 64, 64);
339 memcpy(ptr, header2, sizeof(header2));
340 ptr += sizeof(header2);
341 memcpy(ptr, cam->buffer + 128,
342 actual_length - 128);
343 ptr += actual_length - 128;
345 DBG("header : %d %d %d %d %d %d %d %d %d",
346 cam->buffer[0], cam->buffer[1], cam->buffer[2],
347 cam->buffer[3], cam->buffer[4], cam->buffer[5],
348 cam->buffer[6], cam->buffer[7], cam->buffer[8]);
350 memcpy(ptr, cam->buffer, actual_length);
351 ptr += actual_length;
354 /* ... until there is no more */
355 while (actual_length == BUFFER_SIZE);
357 /* we skip the 2 first frames which are usually buggy */
363 /* go back to find the JPEG EOI marker */
367 if (*ptr == 0xFF && *(ptr + 1) == 0xD9
368 && *(ptr + 2) == 0xFF)
373 DBG("No EOI marker");
375 /* Sometimes there is junk data in the middle of the picture,
376 * we want to skip this bogus frames */
378 if (*ptr == 0xFF && *(ptr + 1) == 0xFF
379 && *(ptr + 2) == 0xFF)
384 DBG("Bogus frame ? %d", cam->nb);
388 DBG("jpeg : %d %d %d %d %d %d %d %d",
389 jpeg[0], jpeg[1], jpeg[2], jpeg[3],
390 jpeg[4], jpeg[5], jpeg[6], jpeg[7]);
396 static ssize_t zr364xx_read(struct file *file, char __user *buf, size_t cnt,
399 unsigned long count = cnt;
400 struct video_device *vdev = video_devdata(file);
401 struct zr364xx_camera *cam;
403 DBG("zr364xx_read: read %d bytes.", (int) count);
407 cam = video_get_drvdata(vdev);
416 count = read_frame(cam, 0);
418 if (copy_to_user(buf, cam->framebuf, count))
425 static int zr364xx_vidioc_querycap(struct file *file, void *priv,
426 struct v4l2_capability *cap)
428 strcpy(cap->driver, DRIVER_DESC);
429 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE;
433 static int zr364xx_vidioc_enum_input(struct file *file, void *priv,
434 struct v4l2_input *i)
438 strcpy(i->name, DRIVER_DESC " Camera");
439 i->type = V4L2_INPUT_TYPE_CAMERA;
443 static int zr364xx_vidioc_g_input(struct file *file, void *priv,
450 static int zr364xx_vidioc_s_input(struct file *file, void *priv,
458 static int zr364xx_vidioc_queryctrl(struct file *file, void *priv,
459 struct v4l2_queryctrl *c)
461 struct video_device *vdev = video_devdata(file);
462 struct zr364xx_camera *cam;
466 cam = video_get_drvdata(vdev);
469 case V4L2_CID_BRIGHTNESS:
470 c->type = V4L2_CTRL_TYPE_INTEGER;
471 strcpy(c->name, "Brightness");
475 c->default_value = cam->brightness;
484 static int zr364xx_vidioc_s_ctrl(struct file *file, void *priv,
485 struct v4l2_control *c)
487 struct video_device *vdev = video_devdata(file);
488 struct zr364xx_camera *cam;
492 cam = video_get_drvdata(vdev);
495 case V4L2_CID_BRIGHTNESS:
496 cam->brightness = c->value;
504 static int zr364xx_vidioc_g_ctrl(struct file *file, void *priv,
505 struct v4l2_control *c)
507 struct video_device *vdev = video_devdata(file);
508 struct zr364xx_camera *cam;
512 cam = video_get_drvdata(vdev);
515 case V4L2_CID_BRIGHTNESS:
516 c->value = cam->brightness;
524 static int zr364xx_vidioc_enum_fmt_vid_cap(struct file *file,
525 void *priv, struct v4l2_fmtdesc *f)
529 f->flags = V4L2_FMT_FLAG_COMPRESSED;
530 strcpy(f->description, "JPEG");
531 f->pixelformat = V4L2_PIX_FMT_JPEG;
535 static int zr364xx_vidioc_try_fmt_vid_cap(struct file *file, void *priv,
536 struct v4l2_format *f)
538 struct video_device *vdev = video_devdata(file);
539 struct zr364xx_camera *cam;
543 cam = video_get_drvdata(vdev);
545 if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_JPEG)
547 if (f->fmt.pix.field != V4L2_FIELD_ANY &&
548 f->fmt.pix.field != V4L2_FIELD_NONE)
550 f->fmt.pix.field = V4L2_FIELD_NONE;
551 f->fmt.pix.width = cam->width;
552 f->fmt.pix.height = cam->height;
553 f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
554 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
555 f->fmt.pix.colorspace = 0;
560 static int zr364xx_vidioc_g_fmt_vid_cap(struct file *file, void *priv,
561 struct v4l2_format *f)
563 struct video_device *vdev = video_devdata(file);
564 struct zr364xx_camera *cam;
568 cam = video_get_drvdata(vdev);
570 f->fmt.pix.pixelformat = V4L2_PIX_FMT_JPEG;
571 f->fmt.pix.field = V4L2_FIELD_NONE;
572 f->fmt.pix.width = cam->width;
573 f->fmt.pix.height = cam->height;
574 f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
575 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
576 f->fmt.pix.colorspace = 0;
581 static int zr364xx_vidioc_s_fmt_vid_cap(struct file *file, void *priv,
582 struct v4l2_format *f)
584 struct video_device *vdev = video_devdata(file);
585 struct zr364xx_camera *cam;
589 cam = video_get_drvdata(vdev);
591 if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_JPEG)
593 if (f->fmt.pix.field != V4L2_FIELD_ANY &&
594 f->fmt.pix.field != V4L2_FIELD_NONE)
596 f->fmt.pix.field = V4L2_FIELD_NONE;
597 f->fmt.pix.width = cam->width;
598 f->fmt.pix.height = cam->height;
599 f->fmt.pix.bytesperline = f->fmt.pix.width * 2;
600 f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
601 f->fmt.pix.colorspace = 0;
607 static int zr364xx_vidioc_streamon(struct file *file, void *priv,
608 enum v4l2_buf_type type)
613 static int zr364xx_vidioc_streamoff(struct file *file, void *priv,
614 enum v4l2_buf_type type)
620 /* open the camera */
621 static int zr364xx_open(struct file *file)
623 struct video_device *vdev = video_devdata(file);
624 struct zr364xx_camera *cam = video_get_drvdata(vdev);
625 struct usb_device *udev = cam->udev;
630 mutex_lock(&cam->lock);
637 if (!cam->framebuf) {
638 cam->framebuf = vmalloc_32(MAX_FRAME_SIZE * FRAMES);
639 if (!cam->framebuf) {
640 dev_err(&cam->udev->dev, "vmalloc_32 failed!\n");
646 for (i = 0; init[cam->method][i].size != -1; i++) {
648 send_control_msg(udev, 1, init[cam->method][i].value,
649 0, init[cam->method][i].bytes,
650 init[cam->method][i].size);
652 dev_err(&cam->udev->dev,
653 "error during open sequence: %d\n", i);
660 file->private_data = vdev;
662 /* Added some delay here, since opening/closing the camera quickly,
663 * like Ekiga does during its startup, can crash the webcam
669 mutex_unlock(&cam->lock);
674 /* release the camera */
675 static int zr364xx_release(struct file *file)
677 struct video_device *vdev = video_devdata(file);
678 struct zr364xx_camera *cam;
679 struct usb_device *udev;
682 DBG("zr364xx_release");
686 cam = video_get_drvdata(vdev);
690 mutex_lock(&cam->lock);
693 file->private_data = NULL;
695 for (i = 0; i < 2; i++) {
697 send_control_msg(udev, 1, init[cam->method][i].value,
698 0, init[i][cam->method].bytes,
699 init[cam->method][i].size);
701 dev_err(&udev->dev, "error during release sequence\n");
706 /* Added some delay here, since opening/closing the camera quickly,
707 * like Ekiga does during its startup, can crash the webcam
713 mutex_unlock(&cam->lock);
718 static int zr364xx_mmap(struct file *file, struct vm_area_struct *vma)
721 unsigned long start = vma->vm_start;
722 unsigned long size = vma->vm_end - vma->vm_start;
723 struct video_device *vdev = video_devdata(file);
724 struct zr364xx_camera *cam;
726 DBG("zr364xx_mmap: %ld\n", size);
730 cam = video_get_drvdata(vdev);
734 if (vm_insert_page(vma, start, vmalloc_to_page(pos)))
738 if (size > PAGE_SIZE)
748 static const struct v4l2_file_operations zr364xx_fops = {
749 .owner = THIS_MODULE,
750 .open = zr364xx_open,
751 .release = zr364xx_release,
752 .read = zr364xx_read,
753 .mmap = zr364xx_mmap,
754 .ioctl = video_ioctl2,
757 static const struct v4l2_ioctl_ops zr364xx_ioctl_ops = {
758 .vidioc_querycap = zr364xx_vidioc_querycap,
759 .vidioc_enum_fmt_vid_cap = zr364xx_vidioc_enum_fmt_vid_cap,
760 .vidioc_try_fmt_vid_cap = zr364xx_vidioc_try_fmt_vid_cap,
761 .vidioc_s_fmt_vid_cap = zr364xx_vidioc_s_fmt_vid_cap,
762 .vidioc_g_fmt_vid_cap = zr364xx_vidioc_g_fmt_vid_cap,
763 .vidioc_enum_input = zr364xx_vidioc_enum_input,
764 .vidioc_g_input = zr364xx_vidioc_g_input,
765 .vidioc_s_input = zr364xx_vidioc_s_input,
766 .vidioc_streamon = zr364xx_vidioc_streamon,
767 .vidioc_streamoff = zr364xx_vidioc_streamoff,
768 .vidioc_queryctrl = zr364xx_vidioc_queryctrl,
769 .vidioc_g_ctrl = zr364xx_vidioc_g_ctrl,
770 .vidioc_s_ctrl = zr364xx_vidioc_s_ctrl,
773 static struct video_device zr364xx_template = {
775 .fops = &zr364xx_fops,
776 .ioctl_ops = &zr364xx_ioctl_ops,
777 .release = video_device_release,
783 /*******************/
784 /* USB integration */
785 /*******************/
787 static int zr364xx_probe(struct usb_interface *intf,
788 const struct usb_device_id *id)
790 struct usb_device *udev = interface_to_usbdev(intf);
791 struct zr364xx_camera *cam = NULL;
796 dev_info(&intf->dev, DRIVER_DESC " compatible webcam plugged\n");
797 dev_info(&intf->dev, "model %04x:%04x detected\n",
798 le16_to_cpu(udev->descriptor.idVendor),
799 le16_to_cpu(udev->descriptor.idProduct));
801 cam = kzalloc(sizeof(struct zr364xx_camera), GFP_KERNEL);
803 dev_err(&udev->dev, "cam: out of memory !\n");
806 /* save the init method used by this camera */
807 cam->method = id->driver_info;
809 cam->vdev = video_device_alloc();
810 if (cam->vdev == NULL) {
811 dev_err(&udev->dev, "cam->vdev: out of memory !\n");
815 memcpy(cam->vdev, &zr364xx_template, sizeof(zr364xx_template));
816 video_set_drvdata(cam->vdev, cam);
818 cam->vdev->debug = V4L2_DEBUG_IOCTL | V4L2_DEBUG_IOCTL_ARG;
822 if ((cam->buffer = kmalloc(BUFFER_SIZE, GFP_KERNEL)) == NULL) {
823 dev_info(&udev->dev, "cam->buffer: out of memory !\n");
824 video_device_release(cam->vdev);
831 dev_info(&udev->dev, "160x120 mode selected\n");
836 dev_info(&udev->dev, "640x480 mode selected\n");
841 dev_info(&udev->dev, "320x240 mode selected\n");
848 m1[2].value = 0xf000 + mode;
849 m2[1].value = 0xf000 + mode;
850 header2[437] = cam->height / 256;
851 header2[438] = cam->height % 256;
852 header2[439] = cam->width / 256;
853 header2[440] = cam->width % 256;
856 cam->brightness = 64;
857 mutex_init(&cam->lock);
859 err = video_register_device(cam->vdev, VFL_TYPE_GRABBER, -1);
861 dev_err(&udev->dev, "video_register_device failed\n");
862 video_device_release(cam->vdev);
868 usb_set_intfdata(intf, cam);
870 dev_info(&udev->dev, DRIVER_DESC " controlling video device %d\n",
876 static void zr364xx_disconnect(struct usb_interface *intf)
878 struct zr364xx_camera *cam = usb_get_intfdata(intf);
879 usb_set_intfdata(intf, NULL);
880 dev_info(&intf->dev, DRIVER_DESC " webcam unplugged\n");
882 video_unregister_device(cam->vdev);
886 vfree(cam->framebuf);
887 cam->framebuf = NULL;
894 /**********************/
895 /* Module integration */
896 /**********************/
898 static struct usb_driver zr364xx_driver = {
900 .probe = zr364xx_probe,
901 .disconnect = zr364xx_disconnect,
902 .id_table = device_table
906 static int __init zr364xx_init(void)
909 retval = usb_register(&zr364xx_driver);
911 printk(KERN_ERR KBUILD_MODNAME ": usb_register failed!\n");
913 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n");
918 static void __exit zr364xx_exit(void)
920 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC " module unloaded\n");
921 usb_deregister(&zr364xx_driver);
925 module_init(zr364xx_init);
926 module_exit(zr364xx_exit);
928 MODULE_AUTHOR(DRIVER_AUTHOR);
929 MODULE_DESCRIPTION(DRIVER_DESC);
930 MODULE_LICENSE("GPL");